#pragma once
#include<iostream>
#include<queue>
#include<pthread.h>
#include"LockGuard.hpp"
const int defaultcap=5;
template<class T>
class BlockQueue
{
    public:
    BlockQueue(int cap=defaultcap)
    :_capacity(cap)
    {
        pthread_mutex_init(&_mutex,nullptr);
        pthread_cond_init(&_c_cond,nullptr);
        pthread_cond_init(&_p_cond,nullptr);
    }
    bool isFull()
    {
        return _q.size()==_capacity;
    }
    bool isempty()
    {
        return _q.size()==0;
    }
    void push(const T&in)
    {
        LockGuard lockguard(&_mutex);
        while(isFull())
        {
            pthread_cond_wait(&_p_cond,&_mutex);
        }
        _q.push(in);
        pthread_cond_signal(&_c_cond);
    }
    void Pop(T*out)
    {
        LockGuard lockguard(&_mutex);
        while(isempty())
        {
            pthread_cond_wait(&_c_cond,&_mutex);
        }
        *out=_q.front();
        _q.pop();
        pthread_cond_signal(&_p_cond);
    }
    ~BlockQueue()
    {
        pthread_mutex_destroy(&_mutex);
        pthread_cond_destroy(&_p_cond);
        pthread_cond_destroy(&_c_cond);
    }
    private:
    std::queue<T> _q;
    int _capacity;
    pthread_mutex_t _mutex;
    pthread_cond_t _p_cond;
    pthread_cond_t _c_cond;

};